Display screen or portion thereof with transitional graphical user interface



FIG. 1 is a front view of the first image in a sequence for a displayscreen or portion thereof with transitional graphical user interface,showing my new design;

FIG. 2 is a front view of the second image thereof;

FIG. 3 is a front view of the third image thereof;

FIG. 4 is a front view of the fourth image thereof;

FIG. 5 is a front view of the fifth image thereof;

FIG. 6 is an enlarged front view of the portion enclosed by thedot-dashed broken lines in FIG. 1;

FIG. 7 is an enlarged front view of the portion enclosed by thedot-dashed broken lines in FIG. 2;

FIG. 8 is an enlarged front view of the portion enclosed by thedot-dashed broken lines in FIG. 3;

FIG. 9 is an enlarged front view of the portion enclosed by thedot-dashed broken lines in FIG. 4; and,

FIG. 10 is an enlarged front view of the portion enclosed by thedot-dashed broken lines in FIG. 5.

The appearance of the transitional graphical user interface sequentiallytransitions between the images shown in FIGS. 1-5 and FIGS. 6-10,respectively. Variation in the dot density of stippling shown in thedrawings illustrates contrasting appearance. The process or period inwhich one image transitions to another forms no part of the claimeddesign.

The outer perimeter illustrated by a pair of dashed broken lines inFIGS. 1-5 represents a display screen or portion thereof and forms nopart of the claimed design. The remaining dashed broken lines shown inthe drawings illustrate portions of the graphical user interface thatform no part of the claimed design. The dot-dash broken lines define theboundary of the claimed design and, in FIGS. 6-10, illustrate a portionof the display screen. The dot-dash lines form no part of the claimeddesign.

CLAIM The ornamental design for a display screen or portion thereof withtransitional graphical user interface, as shown and described.